Some Naming and Cosmetic Change Offers

[ozayturay]

To visually match the Arduino IDE naming conventions and general ESP8266 naming here are my suggestions:

platform.txt:

As in ESP8266 world boards are called as modules, so name should include the word "Modules"

name=Arduino ESP8266 Modules

programmers.txt:

In Arduino IDE all programmer names start with capital letter so captalizing ESPTool should look good
esptool.name=ESPTool

boards.txt

As there are several modules esp01.xxx definitions should be converted to generic.xxx and esp01 in variants directory should be renamed accordingly.

Variant names should include Module as above and esp01's replaced by generic elsewhere

generic.name=Generic ESP8266 Module
generic.build.board=ESP8266_GENERIC
generic.build.variant=generic

wifio.name=WIFIO Module

[ozayturay]

There is still an ESP01 word left in boards.txt

generic.build.board=ESP8266_ESP01

İt sould better be

generic.build.board=ESP8266_GENERIC

[ozayturay]

And the line

wifio.upload.tool=esptool

is duplicated.